An unhealthy environment is the main cause of dry eyes in most cases, so a humidifier is the answer to your problem. A humidifier adds moisture to the room in which it is placed and with more moisture in the air, the tears from your eyes will evaporate a lot slower thus keeping your eyes more comfortable. It is important however to ventilate the area by opening up the windows when you are not in the room to prevent mold from building up. In addition, if you live or work in a dusty environment, consider getting an air filter for cleaner air.
2. Try a warm compress.